The company has identified a resource of 14.6 million tonnes containing 201,652 tonnes of tin at Nazareth, reported local media.
Minsur is working on a tailings reprocessing project near its San Rafael mine in Ica called B2 with an investment of US$200 million.
It is also building the Mina Justa copper mine, which in May was 90% complete. Mina Justa will produce 140,000-150,000 tonnes a year for 16 years in cathodes and concentrates from proven and probable reserves of 203 million tonnes grading 0.75% copper.